CN219037655U - Energy-saving evaporative condensing vacuum unit - Google Patents
Energy-saving evaporative condensing vacuum unit Download PDFInfo
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- CN219037655U CN219037655U CN202223217359.3U CN202223217359U CN219037655U CN 219037655 U CN219037655 U CN 219037655U CN 202223217359 U CN202223217359 U CN 202223217359U CN 219037655 U CN219037655 U CN 219037655U
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Abstract
The utility model discloses an energy-saving evaporative condensing vacuum unit, which belongs to the technical field of vacuum units and comprises a water-cooling condenser, wherein the water-cooling condenser comprises a shell and a heat exchange tube, the top of the shell is provided with a steam inlet, a plurality of groups of spray pipes are arranged in a cavity between the steam inlet and the heat exchange tube, and a plurality of groups of spray heads are arranged on the spray pipes. The combined system of the Roots vacuum pump, the liquid ring vacuum pump and the auxiliary device enables the vacuum unit to have good air extraction efficiency, the energy-saving effect is better, the water-cooling condenser of the scheme is provided with a plurality of groups of spray pipes and spray heads, the heat exchange effect is increased through a spray mode, thereby ensuring the condensing efficiency of the water-cooling condenser, effectively improving the air extraction efficiency in the environment with higher temperature in summer, effectively keeping the vacuum degree of the water-cooling condenser, enabling the generator unit to be kept in the optimal working state for a long time, and having better energy-saving effect.
Description
Technical Field
The utility model belongs to the technical field of vacuum units, and particularly relates to an energy-saving evaporative condensing vacuum unit.
Background
In a thermal power generating unit, a condenser and a vacuumizing unit are required to be installed at a steam turbine exhaust port, so that optimal vacuum is formed at the steam turbine exhaust port, the efficiency of converting heat energy into mechanical energy is improved, meanwhile, thrown waste steam is cooled through the condenser, and is condensed into water again, in the process, the vacuumizing unit is mainly used for establishing and maintaining the vacuum environment of the condenser, and the equipment safety and the service environment of the condenser are ensured.
The Chinese patent 201620081467.8 discloses a water-cooled condenser maintenance vacuum unit which replaces a condenser to maintain vacuum, and is formed by connecting a Roots vacuum pump and a small liquid ring vacuum pump in series, wherein the Roots pump is a vacuum pump which can bear high pressure difference and high compression ratio and can operate in a wider pressure range, a smaller liquid ring pump can be configured after the pump is applied, the ultimate vacuum can reach about 300pa, the energy is greatly saved, and the vacuum unit still has the problem of poor efficiency due to higher temperature in summer; based on the problem, the Chinese patent relates to a maintenance vacuum unit applied to a direct air-cooling condenser of a thermal power plant, which condenses most of vapor condenser discharged by the direct air-cooling condenser into water through a front evaporation condenser, so that the vacuumizing efficiency of the unit in the case of higher temperature in summer is ensured, and the condenser is ensured to reach the optimal working vacuum degree. However, at present, more condensers in the thermal power generating unit adopt water-cooled condensers, and a new solution is required to be provided for the general problem of the summer condensing efficiency of the water-cooled condensers.
Disclosure of Invention
The utility model aims to provide an energy-saving evaporative condensing vacuum unit, which aims to solve the problem of the prior vacuum unit in the use process in the background technology.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides an energy-saving evaporative condensing vacuum unit, includes the water-cooling condenser, including shell and heat exchange tube on the water-cooling condenser, the top of shell is provided with the steam inlet, be provided with multiunit shower in the cavity between steam inlet and the heat exchange tube, be provided with multiunit shower on the shower, the heat exchange tube is connected with the condenser tube, still be provided with on the condenser tube with the moisturizing pipe of shower intercommunication, set up solenoid valve and water pump on the moisturizing pipe, the water-cooling condenser is connected to the roots vacuum pump through intelligent control valve, the roots vacuum pump is connected to the liquid ring vacuum pump through shell and tube cooler and automatic check valve, the liquid ring vacuum pump is connected to gas-water separator.
Preferably, a temperature controller and a bimetal thermometer are connected in series on a pipeline between the liquid ring vacuum pump and the gas-water separator; and a digital display intelligent pressure transmitter is connected in series on a pipeline between the intelligent regulating valve and the Roots vacuum pump.
Preferably, the gas-water separator is provided with an intelligent liquid level controller, an exhaust valve and an electromagnetic water supplementing valve connected with an external water source.
Preferably, the spray pipes are arranged at different heights in the cavity, and the spray heads are provided with atomizing nozzles.
Preferably, a temperature and pressure sensor is arranged in the cavity.
Compared with the prior art, the utility model has the beneficial effects that:
the vacuum unit mainly comprises a water-cooling condenser, a Roots vacuum pump and a liquid ring vacuum pump which are connected in series, and the vacuum unit has good air extraction efficiency and better energy-saving effect through a combined system of the Roots vacuum pump, the liquid ring vacuum pump and an auxiliary device; the water-cooling condenser of this scheme is provided with multiunit shower and shower head, increases the heat transfer effect through the mode that sprays to guarantee the condensing efficiency of water-cooling condenser, effectively promote the air extraction efficiency in the higher environment of summer temperature, effectively keep the vacuum degree of water-cooling condenser, make generating set can keep in best operating condition for a long time, better energy-conserving effect.
Drawings
FIG. 1 is a schematic diagram of a vacuum unit structure according to the present utility model;
fig. 2 is a schematic diagram of a water-cooled condenser according to the present utility model.
In the figure: 1. a water-cooled condenser; 101. a steam inlet; 102. a shower pipe; 103. a spray header; 104. a water supplementing pipe; 105. a cooling water pipe; 106. a heat exchange tube; 107. a temperature and pressure sensor; 2. a water pump; 3. an electromagnetic valve; 4. an intelligent regulating valve; 5. a pressure transmitter; 6. roots vacuum pump; 7. a shell and tube cooler; 8. an automatic check valve; 9. a liquid ring vacuum pump; 10. a digital display flowmeter; 11. an electromagnetic stop valve; 12. a temperature controller; 13. a bimetal thermometer; 14. a heat exchanger; 15. a filter; 16. an intelligent liquid level controller; 17. a gas-water separator; 18. an evacuation valve; 19. electromagnetic water supplementing valve.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1-2, an energy-saving evaporative condensing vacuum unit comprises a water-cooling condenser 1, wherein the water-cooling condenser 1 comprises a shell and a heat exchange tube 106, a steam inlet 101 is arranged at the top of the shell, a plurality of groups of spray pipes 102 are arranged in a cavity between the steam inlet 101 and the heat exchange tube 106, a plurality of groups of spray heads 103 are arranged on the spray pipes 102, the heat exchange tube 106 is connected with a cooling water tube 105, a water supplementing tube 104 communicated with the spray pipes 102 is further arranged on the cooling water tube 105, an electromagnetic valve 3 and a water pump 2 are arranged on the water supplementing tube 104, the water-cooling condenser 1 is connected to a Roots vacuum pump 6 through an intelligent adjusting valve 4, the Roots vacuum pump 6 is connected to a liquid ring vacuum pump 9 through a tube type cooler 7 and an automatic check valve 8, and the liquid ring vacuum pump 9 is connected to a gas-water separator 17.
In the scheme, a spray pipe 102 and a spray header 103 are further arranged in a cavity above a heat exchange pipe 106 of the water-cooled condenser 1, cooling water can be sprayed out by the spray pipe 102 and the spray header 103, condensing efficiency is accelerated, and vacuum degree of the water-cooled condenser 1 in summer is guaranteed when temperature is high; the source of cooling water of the spray header 103 is consistent with that of the heat exchange tube 106, and the pipeline layout is simple and convenient.
Further, a temperature controller 12 and a bimetal thermometer 13 are connected in series on a pipeline between the liquid ring vacuum pump 9 and the gas-water separator 17; a digital display intelligent pressure transmitter 5 is connected in series on a pipeline between the intelligent regulating valve 4 and the Roots vacuum pump 6.
Further, an intelligent liquid level controller 16, an evacuation valve 18 and an electromagnetic water replenishing valve 19 connected with an external water source are arranged on the gas-water separator 17.
Further, a plurality of sets of shower pipes 102 are disposed at different heights within the chamber, and an atomizing nozzle is disposed on the shower head 103.
In this scheme, through setting up shower 102 at the not co-altitude of cavity, multiunit shower head 103 passes through atomizing nozzle blowout cooling water smoke to increase the area of contact of cold source and steam, promote the condensing efficiency of steam, guarantee the condensing effect of water-cooling condenser 1 in summer high temperature weather.
Further, a temperature sensor and a pressure sensor are arranged in the chamber.
In this scheme, temperature sensor and pressure sensor are used for monitoring the parameter in the cavity, and when pressure sensor response atmospheric pressure is too big, then indicate that the condensing efficiency of water-cooling condenser 1 is general, and inside vacuum is relatively poor, and solenoid valve 3 opens this moment, and water pump 2 is supplied water for shower 102 through moisturizing pipe 104, utilizes shower head 103 to promote the condensing efficiency of water-cooling condenser 1.
Working principle: the water-cooled condenser 1 absorbs water vapor of a steam turbine, the water vapor passes through the heat exchange tube 106 of the water-cooled condenser 1 and is condensed and then discharged, when the temperature is higher and the efficiency of the water-cooled condenser 1 is insufficient, the temperature and pressure sensor 107 senses that the pressure in the condenser is overlarge, the electromagnetic valve 3 is opened, the spray header 103 sprays water mist, the heat exchange area is increased, the contact area between a cold source and the vapor is increased, and the condensing efficiency of the vapor is improved; the air outlet of the water-cooling condenser 1 is connected with the air inlet of a vacuum unit, water vapor enters the vacuum unit through the intelligent regulating valve 4, is pumped and compressed by the Roots vacuum pump 6 and then enters the tubular cooler 7, residual water vapor is condensed into water again in the tubular cooler 7, the condensed water and a small amount of non-condensed water vapor and air are sucked by the liquid ring vacuum pump 9 (the water vapor is little after the re-condensation, the power requirement of subsequent equipment is reduced, the energy-saving effect is obvious), part of the non-condensed water vapor is condensed into water after the re-compression in the liquid ring vacuum pump 9 and is discharged into the gas-water separator 17, the water and the discharged air are completely separated in the gas-water separator 17 in a cyclone separation mode, the water is left for recycling, a small amount of air is directly discharged into the atmosphere, and the water in the gas-water separator 17 can be supplied to the liquid ring vacuum pump 9 for recycling after the water is filtered by the filter 15 and then cooled by the heat exchanger 14.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. An energy-saving evaporative condensing vacuum unit is characterized in that: including the water-cooling condenser, including shell and heat exchange tube on the water-cooling condenser, the top of shell is provided with the steam inlet, be provided with multiunit shower in the cavity between steam inlet and the heat exchange tube, be provided with multiunit shower on the shower, the heat exchange tube is connected with condenser tube, still be provided with on the condenser tube with the moisturizing pipe of shower intercommunication, set up solenoid valve and water pump on the moisturizing pipe, the water-cooling condenser is connected to roots vacuum pump through intelligent control valve, roots vacuum pump is connected to the liquid ring vacuum pump through tubulation formula cooler and automatic check valve, the liquid ring vacuum pump is connected to the gas-water separator.
2. The energy-saving evaporative condensing vacuum unit as claimed in claim 1, wherein: a temperature controller and a bimetal thermometer are connected in series on a pipeline between the liquid ring vacuum pump and the gas-water separator; and a digital display intelligent pressure transmitter is connected in series on a pipeline between the intelligent regulating valve and the Roots vacuum pump.
3. The energy-saving evaporative condensing vacuum unit as claimed in claim 1, wherein: the gas-water separator is provided with an intelligent liquid level controller, an emptying valve and an electromagnetic water supplementing valve connected with an external water source.
4. The energy-saving evaporative condensing vacuum unit as claimed in claim 1, wherein: the spray pipes are arranged at different heights in the cavity, and the spray heads are provided with atomizing nozzles.
5. The energy-saving evaporative condensing vacuum unit as claimed in claim 1, wherein: and a temperature and pressure sensor is arranged in the cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223217359.3U CN219037655U (en) | 2022-12-02 | 2022-12-02 | Energy-saving evaporative condensing vacuum unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223217359.3U CN219037655U (en) | 2022-12-02 | 2022-12-02 | Energy-saving evaporative condensing vacuum unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219037655U true CN219037655U (en) | 2023-05-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223217359.3U Active CN219037655U (en) | 2022-12-02 | 2022-12-02 | Energy-saving evaporative condensing vacuum unit |
Country Status (1)
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|---|---|
| CN (1) | CN219037655U (en) |
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2022
- 2022-12-02 CN CN202223217359.3U patent/CN219037655U/en active Active
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